Hello Edward. > So does anyone have any suggestions/tips for high volume/multinode > pop-before-smtp? (I know I don't want to support it either but such is > life)
Well, try pbsdbd coming with qmail-ldap. It uses a client / server architecture and afaik holds the data only in memory. But every mail server acts as a client and can query every other as server based upon the settings and list order in "pbsservers". There is no need to alter the tcp.smtp.cdb. In the run file for qmail-smtpd the client "pbscheck" is called before coming to qmail-ldap. We have used that for many years, also on our main mail farm which is based on seven sun-fire server. Actually we do not use pop-before-smtp anymore because we force our users to use SMTP-Auth especially if they contact the mail server from foreign ip addresses. Greetings Phil.
